Melting-furnace.



'NO. 794,762. PATENTED JULY 18, 1905.

I w. E. WILLI-AMS.

" M ELTING FURNACE.

APPLICATION FILED MAR. 13, 1903.

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PATENTED JULYIa, 1905.

w. E. WILLIAMS. MELTING mamas.

APPLICATION FILED MAR. 13, 1993.

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UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

MELTlNG-FURNACE.

SPECIFICATION forming part of Letters Patent No. 794,762, dated July 18, 1905.

Application filed March 13, 1903. Serial No. 147,630.

To all whom it may concern.-

Be it known that 1, WILLIAM ERASTUS WIL- LIAMS, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Melting- Furnaces, of which the following is a specification.

The invention relates to furnaces for melt-' mg'iron, brass, or other metals or for smelting and refining ores and metals, and especially to the heating of the furnace and the discharge of its contents.

In the accompanying drawings, Figure 1 is a side elevation of my apparatus, parts being in section. Fig. 2 is a plan view of the same apparatus. Fig. 3 is an end elevation. Figs.

4, 5, and 6 are detail views.

In the views, 2 represents a furnace-body having a cover 64 and a spout 3 and consisting of a metal shell 4 with a refractory lining 5 and pivotally supported between standards 8 9 by means of trunnions 6 7. Fuel is supplied to thefurnace through the pipe 12, which passes axially in the trunnion 6 through the standard-bearing for the latter, and the other trunnion 7 serves in a similar manner as a conduit for the entering air-blast, while a pipe 11, lying in the axis of the air-blast space 10, conveys the furnace-gases outward. During the heating of the furnace the pouring-spout 3 is closed by a cap 13 and the cover 64 is secured in place, so that all furnace-gases must escape by the pipe 11, which is connected with a pipe 15 by a joint at 14, allowing the pipe 11 to rotate with the furnace, from which it leads and to which it is fixed. The gases passing out through the pipe 15 traverse a heating-coil 16 or the like and pass thence in to a chimney 17. The heating-coil and pipe 15 are inclosed, respectively, in a drum 18 and a jacket or pipe 19, the latter being connected with the hollow trunnion 7 by a union 20, allowing the trunnion to rotate. This trunnion has a lateral opening 21 leading into a chamber 22, which in turn opens through a passage 23 into the upper part of the furnace. The airblast from any suitable source entering the drum 18 at 99 is heated by the coil and pipes 15 11 before it enters the furnace. The fuel,

preferably fluid, although it may be powdered coal or the like, comes from any suitable source of supply through a pipe 24, having a union 25, connecting it with the pipe 12in such manner that the latter may rotate with the trunnion, through which it passes to a point near the furnace, where it emerges and passes around the furnace and into the pipe 11, where it forms a coil. From this point it passes out through the trunnion-Wall and to a twyer 29, from which the fuel is directed into the furnace by a nozzle 30, the discharge being controlled by a valve 31. The coil may be elsewhere located, the important point being that it should be highly heated, and the twyer and passage 23 may be varied in position, and obviously the number of twyers may be greater than one for each furnace.

For tilting the furnace any desired mechanical devices may be employed; but I prefer the construction illustrated. As shown, the trunnion 6 is provided with a worm-wheel 32,which may be rotated by a gear acting through a shaft 34 and worm 33. The gear 35 may be rotated by a gear 36 and a hand-wheel 37 or may be rotated in either direction by a power-shaft 45, bearing fast and loose pulleys 46 47 for its driving-belt and acting through devices to be described. The gear 35 is engaged by a gear 98 upon a shaft 38, which bears above loose gears 39 40, engaging upon opposite sides a gear 44 upon the shaft 45. The loose gears bear clutch members 41 42, to be engaged by a clutch member 43, splined to the shaft 38, mounted in a swivel-ring 48 and moved along the shaft to engage either or neither of the gears 39 by a bell-crank lever 49 51, pivoted at 50 and bearing upon its normally vertical arm 51 a weight which is balanced above the pivot 50 when the clutch member 43 is engaged with neither gear, but which moves to one side or the other as the clutch is raised or depressed, and thus tends by its weight to maintain whichever engagement the movement of the clutch may have produced. The free end of the leverarm 49 is connected with a bar 52, extending down to a block 53 upon the standard 8, holes in the block and bar permitting a pin to lock the bar in such position that the clutch member 43 cannot engage either loose gear. By this means the worm-wheel may be left entirely free to be turned by the hand-wheel.

Upon the bar 52 is a sliding block 54:, which may be locked to the bar by a pin 55, and this block carries a roller 56, to be engaged above and below by cam-blocks 57 58, adjustably fixed to the worm-gear by bolts moving when loosened in slots 97 in the gear, and thus permitting the adjustment of the blocks. If the latter be properly adjusted and if the clutch be thrown into engagement with either of the loose gears, the worm-wheel, and of course the furnace also, will be slowly turned in one direction through a certain angle, when the blocks will shift the clutch automatically into engagement with the other loose gear, which will cause contrary rotation of the wormwheel and furnace, and so on indefinitely, the degree of tilting depending upon the adjustment of the blocks and the result being to expose all parts of the contents of the furnace to the direct action of the flame.

For pouring the metal the block 54 is freed from the bar 52, so that the cams are without effect, and the clutch member 43 is engaged above or below, as desired, by means of a lever 60, pivoted at 62 to a post 63 and engaged with the bar 52 by a pin 61. Before pouring the spout is heated by removing its cap and allowing the hot gases to pass out through it for a short time; but during the pouring, as well as during charging, the fuel and blast are shut off.

What I claim is 1. The combination with a revolubly-mounted melting-furnace having along its axis of rotation an incoming-air-blast conduit and an outgoing-burned-gas conduit arranged for heating the conduit first mentioned, of a fuelconduit passing within the space heated by the outgoing gases and then discharging into the furnace above the conduit last mentioned and upon the same side of the furnace.

2. The combination with a suitably-mounted furnace having normally closed charging and pouring openings, of a hand-operated device for tilting the furnace, an automatic device for tilting the furnace in either direction at will, means for regulating the extent of such tilting, and means for throwing said automatic device into and out of action at will.

3. The combination with a melting-furnace having trunnions one of which is hollow and provided with a channel for the escape of the products of combustion within the furnace and with an air-admitting passage concentric with said channel, of a fuel-conduit arranged to be heated from said channel, twyers above said hollow trunnion, and conduits leading to said twyers from said passage and the heated portion of the fuel-conduit.

4:. The combination with afurnace provided with trunnions, of conduits for incoming air and outgoing burned gases located in the same trunnion, a fuel-supply conduit arranged to be heated by the outgoing burned gases, twyers above said trunnion, connections between said twyers and the air and fuel conduits, and means for rocking the furnace upon its trunnions during the melting, substantially as set forth.

5. The combination with a melting-furnace provided with trunnions, of conduits leading incoming air and fuel separately through one trunnion, and a conduit leading the gaseous products of combustion outward through the same trunnion in close proximity to the conduits first mentioned, twyers above the trunnion arranged to receive the incoming air and fuel and discharge them into the furnace, and means for rocking the furnace during the melting.

6. The combination with a melting-furnace provided with trunnions, of twyers discharging into the furnace above one trunnion, conduits leading fuel and air, respectively, through said trunnion to said twyers, a conduit leading the products of combustion out from the furnace through said trunnion in close proximity to said air and fuel conduits, and automatic means for rocking the furnace during the melting.

7. The combination with amelting-furnace provided with trunnions, of gearing upon one trunnion for imparting rotary movement thereto, twyers above the other trunnion, a conduit leading air through the trunnion last named and to said twyers, and a conduit leading the products of combustion within the furnace outward through the trunnion in proximity to said air-conduit.

Signed at Chicago this 19th day of February, 1903.

' WILLIAM ERASTUS WILLIAMS. Witnesses:

OTTO KNAAK, LEON A. BEACH. 

